Java tutorial
/* * Copyright 2011 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.google.android.apps.iosched.ui; import android.content.ContentValues; import android.content.Intent; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.RectF; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.CompoundButton; import android.widget.ImageView; import android.widget.TextView; import com.google.android.apps.iosched.provider.ScheduleContract; import com.google.android.apps.iosched.util.ActivityHelper; import com.google.android.apps.iosched.util.AnalyticsUtils; import com.google.android.apps.iosched.util.BitmapUtils; import com.google.android.apps.iosched.util.FractionalTouchDelegate; import com.google.android.apps.iosched.util.NotifyingAsyncQueryHandler; import com.google.android.apps.iosched.util.ParserUtils; import com.google.android.apps.iosched.util.UIUtils; import com.novoda.droidcon2011.R; /** * A fragment that shows detail information for a sandbox company, including company name, * description, product description, logo, etc. */ public class VendorDetailFragment extends Fragment implements NotifyingAsyncQueryHandler.AsyncQueryListener, CompoundButton.OnCheckedChangeListener { private static final String TAG = "VendorDetailFragment"; private Uri mVendorUri; private String mTrackId; private ViewGroup mRootView; private TextView mName; private CompoundButton mStarred; private ImageView mLogo; private TextView mUrl; private TextView mDesc; private TextView mProductDesc; private String mNameString; private NotifyingAsyncQueryHandler mHandler; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final Intent intent = BaseActivity.fragmentArgumentsToIntent(getArguments()); mVendorUri = intent.getData(); if (mVendorUri == null) { return; } setHasOptionsMenu(true); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (mVendorUri == null) { return; } // Start background query to load vendor details mHandler = new NotifyingAsyncQueryHandler(getActivity().getContentResolver(), this); mHandler.startQuery(mVendorUri, VendorsQuery.PROJECTION); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mRootView = (ViewGroup) inflater.inflate(R.layout.fragment_vendor_detail, null); mName = (TextView) mRootView.findViewById(R.id.vendor_name); mStarred = (CompoundButton) mRootView.findViewById(R.id.star_button); mStarred.setFocusable(true); mStarred.setClickable(true); // Larger target triggers star toggle final View starParent = mRootView.findViewById(R.id.header_vendor); FractionalTouchDelegate.setupDelegate(starParent, mStarred, new RectF(0.6f, 0f, 1f, 0.8f)); mLogo = (ImageView) mRootView.findViewById(R.id.vendor_logo); mUrl = (TextView) mRootView.findViewById(R.id.vendor_url); mDesc = (TextView) mRootView.findViewById(R.id.vendor_desc); mProductDesc = (TextView) mRootView.findViewById(R.id.vendor_product_desc); return mRootView; } /** * Build a {@link android.view.View} to be used as a tab indicator, setting the requested string resource as * its label. * * @return View */ private View buildIndicator(int textRes) { final TextView indicator = (TextView) getActivity().getLayoutInflater().inflate(R.layout.tab_indicator, (ViewGroup) mRootView.findViewById(android.R.id.tabs), false); indicator.setText(textRes); return indicator; } /** * {@inheritDoc} */ public void onQueryComplete(int token, Object cookie, Cursor cursor) { if (getActivity() == null) { return; } try { if (!cursor.moveToFirst()) { return; } mNameString = cursor.getString(VendorsQuery.NAME); mName.setText(mNameString); // Unregister around setting checked state to avoid triggering // listener since change isn't user generated. mStarred.setOnCheckedChangeListener(null); mStarred.setChecked(cursor.getInt(VendorsQuery.STARRED) != 0); mStarred.setOnCheckedChangeListener(this); // Start background fetch to load vendor logo final String logoUrl = cursor.getString(VendorsQuery.LOGO_URL); if (!TextUtils.isEmpty(logoUrl)) { BitmapUtils.fetchImage(getActivity(), logoUrl, null, null, new BitmapUtils.OnFetchCompleteListener() { public void onFetchComplete(Object cookie, Bitmap result) { if (result == null) { mLogo.setVisibility(View.GONE); } else { mLogo.setVisibility(View.VISIBLE); mLogo.setImageBitmap(result); } } }); } mUrl.setText(cursor.getString(VendorsQuery.URL)); mDesc.setText(cursor.getString(VendorsQuery.DESC)); mProductDesc.setText(cursor.getString(VendorsQuery.PRODUCT_DESC)); mTrackId = cursor.getString(VendorsQuery.TRACK_ID); // Assign track details when found // TODO: handle vendors not attached to track ActivityHelper activityHelper = ((BaseActivity) getActivity()).getActivityHelper(); activityHelper.setActionBarTitle(cursor.getString(VendorsQuery.TRACK_NAME)); activityHelper.setActionBarColor(cursor.getInt(VendorsQuery.TRACK_COLOR)); AnalyticsUtils.getInstance(getActivity()).trackPageView("/Sandbox/Vendors/" + mNameString); } finally { cursor.close(); } } /** * Handle toggling of starred checkbox. */ public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { final ContentValues values = new ContentValues(); values.put(ScheduleContract.Vendors.VENDOR_STARRED, isChecked ? 1 : 0); mHandler.startUpdate(mVendorUri, values); AnalyticsUtils.getInstance(getActivity()).trackEvent("Sandbox", isChecked ? "Starred" : "Unstarred", mNameString, 0); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.map_menu_items, menu); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == R.id.menu_map) { // The room ID for the sandbox, in the map, is just the track ID final Intent intent = new Intent(getActivity().getApplicationContext(), UIUtils.getMapActivityClass(getActivity())); intent.putExtra(MapFragment.EXTRA_ROOM, ParserUtils.translateTrackIdAliasInverse(mTrackId)); startActivity(intent); return true; } return super.onOptionsItemSelected(item); } /** * {@link com.google.android.apps.iosched.provider.ScheduleContract.Vendors} query parameters. */ private interface VendorsQuery { String[] PROJECTION = { ScheduleContract.Vendors.VENDOR_NAME, ScheduleContract.Vendors.VENDOR_LOCATION, ScheduleContract.Vendors.VENDOR_DESC, ScheduleContract.Vendors.VENDOR_URL, ScheduleContract.Vendors.VENDOR_PRODUCT_DESC, ScheduleContract.Vendors.VENDOR_LOGO_URL, ScheduleContract.Vendors.VENDOR_STARRED, ScheduleContract.Vendors.TRACK_ID, ScheduleContract.Tracks.TRACK_NAME, ScheduleContract.Tracks.TRACK_COLOR, }; int NAME = 0; int LOCATION = 1; int DESC = 2; int URL = 3; int PRODUCT_DESC = 4; int LOGO_URL = 5; int STARRED = 6; int TRACK_ID = 7; int TRACK_NAME = 8; int TRACK_COLOR = 9; } }